US9697963B2 - On-load tap changer - Google Patents

On-load tap changer Download PDF

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Publication number
US9697963B2
US9697963B2 US14/899,575 US201414899575A US9697963B2 US 9697963 B2 US9697963 B2 US 9697963B2 US 201414899575 A US201414899575 A US 201414899575A US 9697963 B2 US9697963 B2 US 9697963B2
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Prior art keywords
load tap
tap changer
detector
force
storing unit
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US14/899,575
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US20160155580A1 (en
Inventor
Hubert Zwirglmaier
Joerg ATMANSPACHER
Andreas Freisberg
Gerhard Felixberger
Johann Jobst
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Maschinenfabrik Reinhausen GmbH
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Maschinenfabrik Reinhausen GmbH
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Assigned to MASCHINENFABRIK REINHAUSEN GMBH reassignment MASCHINENFABRIK REINHAUSEN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FELIXBERGER, Gerhard, FREISBERG, Andreas, ATMANSPACHER, JOERG, JOBST, JOHANN, ZWIRGLMAIER, HUBERT
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0027—Operating mechanisms
    • H01H9/0033—Operating mechanisms with means for indicating the selected tap or limiting the number of selectable taps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3052—Linear spring motors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/40—Driving mechanisms, i.e. for transmitting driving force to the contacts using friction, toothed, or screw-and-nut gearing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/44—Driving mechanisms, i.e. for transmitting driving force to the contacts using Geneva movement

Definitions

  • the invention relates to an on-load tap changer.
  • the on-load tap changer according to the invention comprises a switching tube, a force-storing unit for setting a switch setting of the switching tube, a detector for detecting a switch setting of the on-load tap changer and an on-load tap changer transmission.
  • the on-load tap changer transmission mechanically couples the force-storing unit with the switching tube.
  • On-load tap changers (in abbreviation OLTC) are widely known and customary in the prior art. They serve for uninterrupted switching over between different winding taps of tapped transformers. On-load tap changers are divided into load selectors and load changeover switches.
  • Both kinds of on-load tap changers are actuated by a motor drive (preferably electric motor) for the switching over.
  • a drive output or drive input shaft that draws up a drive element of the on-load tap changer, is moved by the motor drive.
  • This drive element produces, for example, movement of a switching tube of the on-load tap changer and is usually termed force-storing unit (or also power store).
  • force-storing unit or also power store.
  • the switch contacts serve for direct connection of the respective winding tap with the load diverter and the resistance contacts for temporary connection, i.e. bridging over, by means of one or more switch-over resistances.
  • vacuum interrupters are used as switch elements for the load changeover. This is based on the fact that the use of vacuum interrupters for the load changeover prevents arc formation in the oil and thus oil contamination of the load changeover switch oil, such as, for example, described in German Patent Specifications DE 195 10 809 [U.S. Pat. No. 5,834,717] and DE 40 11 019 [U.S. Pat. No. 5,107,200] and German published specifications DE 42 31 353 and DE 10 2007 004 5.
  • step switch of the reactor switch type is described in International Patent Application WO 2004/088693 [U.S. Pat. No. 7,463,010].
  • This similarly comprises a motor drive with downstream transmission, particularly a Geneva wheel transmission or lever deflecting transmission.
  • Chinese Utility Model CN 201242930Y discloses an on-load tap changer head for an on-load tap changer for uninterrupted switching over between different load step settings.
  • the on-load tap changer head comprises an on-load tap changer transmission and a mechanical load step setting indicating means.
  • an indicator shaft of the load step setting indicating means is directly coupled to a transmission shaft of the on-load tap changer transmission.
  • the on-load tap changer head is provided with a cover with a viewing window through which the load step setting indicating means is readable.
  • end setting mechanisms are provided so that the on-load tap changer cannot be connected beyond a start setting or end setting.
  • Chinese Utility Model CN 201167023Y discloses an on-load tap changer transmission with an indicating mechanism for switch-setting indicating means of an on-load tap changer.
  • the on-load tap changer transmission comprises a transmission shaft with which a motor driving the switching tube of the on-load tap changer can be coupled.
  • the transmission shaft drives a drive input shaft of the on-load tap changer transmission by a worm gear.
  • a coupling element by which the drive input shaft is coupled with the switching tube of the on-load tap changer is formed at the lower side of an end of the drive input shaft remote from the motor.
  • an end of the indicating shaft projects from the housing of the on-load tap changer and is provided with a pointer rotatable relative to an indicating disk with switch setting marks. In order to improve readability, the pointer can be optically magnified.
  • a disadvantage of the on-load tap changer transmission with an indicating mechanism of Chinese Utility Model Specification CN 201167023Y is that the indicating mechanism records the movement of the drive input shaft for loading a force-storing unit. Derivation at the drive input shaft is susceptible to error, since possible slip between drive input shaft and force-storing unit is not detected, so that the indication of the switching position is imprecise.
  • the object of the invention is to provide an on-load tap changer in which the switch settings of the on-load tap changer can be detected in a manner that is reliable, secure against manipulation and without susceptibility to error.
  • the on-load tap changer shall be simple to maintain.
  • the invention on-load tap changer comprises a switching tube and a force-storing unit for setting a switch setting of the switching tube.
  • the on-load tap changer comprises a detector for detecting a switch setting of the tap changer and an on-load tap changer transmission. Both the switching tube and the detector are mechanically coupled with the force-storing unit by the on-load tap changer transmission.
  • a preselector and optionally a fine selector of the on-load tap changer can each be mechanically coupled by the on-load tap changer transmission with the force-storing unit for setting a switch setting of the preselector and with the detector for detecting its switch setting.
  • the switch setting of the on-load tap changer in this embodiment results from a combination of the setting of switching tube, preselector and optional fine selector.
  • the on-load tap changer transmission transfers, for example, a combination of the movements of switching tube, preselector and optional fine selector into the detector.
  • the detector can detect a mechanical input signal coupled in by the on-load tap changer transmission and convert it into and output an electronic signal of the switch setting of the on-load tap changer.
  • an electronic circuit that further processes the electronic signal for example amplifies and/or digitalizes it, can be provided in the detector.
  • the detector can comprise a cam-switching mechanism and/or transmitter system.
  • the detector comprises a cam-switching mechanism consisting of at least one cam disk with a plurality of switch-setting positions and at least one lobe.
  • the at least one lobe is detachably connectable at each switch-setting position.
  • the cam disk of the detector serves for, for example, detection of end positions of the on-load tap changer. In particular, faulty switchings of the on-load tap changer can thus be avoided.
  • the at least one switch for detecting an end position of the on-load tap changer can be associated with the at least one cam disk in such a way that each switch is actuatable by at least one lobe.
  • the actual detection of the switch setting of the on-load tap changer can take place by a transmitter system that is partly integrated on the cam disk.
  • the transmitter system can be formed as, for example, Hall effect transmitters, optical transmitters or potentiometers.
  • it comprises a plurality of wiper contacts and a wiper. At least one wiper contact that can be electrically coupled with a wiper, is formed at each switch-setting position of the at least one cam disk.
  • one cam disk according to the invention suffices for full detection of the end settings and switch settings of the on-load tap changer.
  • the detector can be designed redundantly with a plurality of such cam disks.
  • a wiper can be simultaneously electrically coupled with the wiper contacts of two cam disks.
  • cam disk of such modular construction the detector can be adapted, by simple shifting of lobes on the cam disk, to on-load tap changers with different numbers of switch settings. Moreover, the modular components of the detector are thus able to be standardized. This reduces costs for production and supply of replacement parts.
  • a detector housing for receiving the detector can be on a cover of the on-load tap changer.
  • a housing cover can be detachably mounted so that the detector can be serviced or exchanged in simple manner without the cover of the on-load tap changer having to be demounted or the on-load tap changer transmission having to be removed.
  • a movement detector In addition to the detector for detecting the switch setting of the on-load tap changer a movement detector can be provided.
  • the movement detector is associated with a drive input shaft, by which the force-storing unit can be loaded, of the on-load tap changer transmission.
  • the movement detector can detect the rotation of the drive input shaft and convert it into and output it as an electronic signal.
  • the drive input shaft is coupled, optionally by a motor transmission, to an electric motor or to a manual emergency actuating means. Detection of the rotation thereof makes it possible to monitor how the force-storing unit is loaded by the electric motor or the emergency actuating means.
  • the movement detector can be constructed as a transmitter system, for example as a cam-switching mechanism.
  • the transmitter system can be constructed as an absolute value transmitter.
  • Absolute value transmitters issue length or angle information of a device to be measured, in the form of an absolute, usually digitalized, numerical value. Since it is not necessary to refer to a reference, they can take up the measurement operation immediately after switching-on, which is of advantage for simple and reliable operation of the on-load tap changer according to the invention.
  • the detector or the detector and the running detector, can be electrically connected with a controller for controlling or regulating the on-load tap changer.
  • a controller for controlling or regulating the on-load tap changer.
  • the electrical signals of detector and optional movement detector to regulate the electric motor of the on-load tap changer that ultimately drives the electrical connecting of the on-load tap changer.
  • the inventive idea which is realized in the present on-load tap changer, is based on derivation from the abrupt drive movement of the force-storing unit that actually acts on the switching tube and optional preselector, instead of from a continuous movement of the drive input shaft that loads the force-storing unit when it is not in operative connection with the switching tube. If the force-storing unit, for example, jams or—erroneously—is not completely loaded so that it is not triggered, then in an on-load tap changer of the prior art the indicated switch setting would depart from the actual switch setting. Previously, detection of the switch setting was based on the rotation of the drive input shaft. Drive input shaft and force-storing unit can move independently of one another.
  • the rotation translator comprises a follower and a cam driver for coupling a movement of the force-storing unit respectively into the detector and the switching tube.
  • the follower and cam driver are rigidly coupled together. It is thereby ensured that the force-storing unit always acts simultaneously on the detector and switching tube.
  • the movement of the force-storing unit is transferred by a respective mechanical transfer mechanism of the on-load tap changer transmission to the detector and the switching tube.
  • the components of these transfer mechanisms can be of stable, compact and slip-free construction. Moreover, they lie within the interior of the on-load tap changer so as to be protected from environmental influences. As a result, the entire on-load tap changer transmission is exposed to the same temperature range so that thermally induced mechanical play or distortions is or are avoided.
  • a significant advantage of the invention resides primarily in the simple coupling integrated in the on-load tap changer transmission, of the detector for detecting the switch setting of the on-load tap changer.
  • Existing solutions of the prior art thereagainst are simulated by the on-load tap changer transmission in the motor transmission coupled therewith, of the electric motor.
  • the coupling process connected therewith and the synchronisation of the electric motor and the on-load tap changer are in that case very complicated and susceptible to fault. If indicated and actual switch positions deviate, an erroneous coupling and switching process can lead to failure of the end setting limitations. According to the invention this is excluded.
  • the simplification according to the invention substitutes a control transmission necessary for this coupling process.
  • a further advantage of the invention is that the electric motor can be demounted for, for example, normal maintenance work without it being necessary to intervene in the mechanical coupling between detector of the on-load tap changer transmission and the switching tube. As a result, the indicated and actual switching positions of the tap changer cannot deviate. At the time of installation of the electric motor a complicated re-calibration of indicated and actual switch settings is not needed.
  • FIG. 1 is a perspective view of an on-load tap changer according to the invention in an embodiment of a three-phase load selector with preselector;
  • FIG. 2 is a perspective view of the on-load tap changer transmission of the on-load tap changer according to the invention
  • FIG. 3 is a further perspective view of the on-load tap changer transmission of the on-load tap changer according to the invention.
  • FIG. 4 is a perspective view from below of the on-load tap changer transmission of the on-load tap changer according to the invention.
  • FIG. 5 is a further perspective view of the upper part of the on-load tap changer in which the installed force-storing unit is visible;
  • FIG. 6 is a perspective view of the cover of the on-load tap changer according to the invention of FIG. 1 in which a controller is illustrated;
  • FIG. 7 is a perspective view of one embodiment of the detector for detecting the switch setting of the on-load tap changer.
  • FIG. 8 is a sectional perspective view of the embodiment shown in FIG. 7 , of the detector for detecting the switch setting of the on-load tap changer.
  • FIG. 1 is a perspective view of an on-load tap changer according to the invention in the form of a three-phase load selector 1 .
  • the load selector 1 here comprises, as drive, an electric motor 3 with a transmission 5 that loads a force-storing unit (not illustrated).
  • a force-storing unit not illustrated.
  • the rotating switching tube 15 is rotatable in the oil tank 18 so that different switching positions can be set.
  • the oil tank 18 is closed upwardly by a cover 19 and additionally carries a base 21 .
  • the load selector 1 has three phases L1, L2, L3 that are one above the other in the oil tank 18 .
  • a preselector 37 is mounted on the switching tube above the three phases L1, L2, L3.
  • Electrical terminal elements 39 are in that case so positioned at the load selector 1 that they pass through a wall 17 of the oil tank 18 .
  • FIG. 2 is a perspective view of the on-load tap changer transmission 100 of the on-load tap changer 1 according to the invention.
  • the on-load tap changer transmission 100 is on a mounting plate 101 that is detachably connected with the sectionally illustrated cover 19 of the on-load tap changer 1 .
  • a drive input shaft 9 is coupled with an electric motor 3 by a motor transmission 5 .
  • the drive input shaft 9 drives a rotation translator 110 in order to load a force-storing unit 13 (see FIG. 5 ) coupled with the rotation translator 110 .
  • the drive input shaft 9 typically executes half a revolution. A full revolution of the drive input shaft 9 is equally conceivable. As soon as the force-storing unit 13 is fully loaded it is unlatched and produces a rotation of the rotation translator 110 .
  • the rotation translator 110 drives a Geneva wheel 120 , with which the switching tube 15 and, via a preselector driver 140 , a preselector 37 are connected. Through a suitable mechanical translation, the switching tube 15 in that case rotates through, for example, an angle of 30° per switching process.
  • the preselector is, for example, switched from a ‘plus position’ via a ‘zero position’ to a ‘minus position’.
  • the rotational translator 110 drives a rotation pick-up 130 that in turn drives an indicator driver 150 .
  • the indicator driver 150 causes a rotation in the detector 200 of, for example, a twentieth of a revolution per 30° rotation of the switching tube 15 .
  • the preselector driver 140 couples the switching movement of the preselector 37 into the rotation pick-up 130 that similarly acts by the indicator driver 150 on the detector 200 .
  • This action can consist of, for example, the rotational sense of the twentieth of a revolution produced by the switching tube 15 , in the detector 200 being reversed.
  • it can be necessary to switch the switching tube 15 to a defined switch-setting position 201 , 202 or 203 before the preselector 37 is connectable. This can be an additional ‘zero position’ of the switching tube 15 .
  • the on-load tap changer transmission 100 the switching movements of the switching tube 15 and the preselector 37 can be simultaneously coupled into the detector 200 and detected.
  • Both the setting of the switching tube 15 and that of the preselector 37 are included in the thus-detectable switch setting of the on-load tap changer 1 .
  • the switching tube 15 has, for example, eight switch settings and the zero position and the preselector 37 has a ‘plus position’ and a ‘minus position’
  • a total of 19 switch settings that can be represented on the detector 200 as, for example, ‘ ⁇ 8, ⁇ 1, 0, +1, . . . , +8’, arise for the entire on-load tap changer 1 .
  • the switch setting ‘ ⁇ 3’ denotes that the preselector 37 is in ‘minus position’ and the switching tube in the third of eight switch positions.
  • a fine selector (not illustrated) can also be included in the switch setting detection by the on-load tap changer transmission 100 .
  • the force-storing unit 13 is loaded by a drive input shaft 9 by the electric motor 3 . When it is completely loaded, it is unlatched so that it rapidly returns to its rest position. In that case the on-load tap changer transmission 100 couples the force-storing unit 13 in such a way to the switching tube 15 that at least a part of its movement energy is translated into a rotation of the switching tube 15 . At the same time, the on-load tap changer transmission 100 couples the force-storing unit 13 in such a way to the detector 200 that it records a movement. The movement recorded by the detector 200 is correlated with the rotation of the switching tube 15 by the on-load tap changer transmission 100 and consequently is a measure for the rotation of the switching tube.
  • an indicator shaft 151 connected with the detector 200 rotates through an angle of 5° when the switching tube rotates through 30°.
  • the drive input shaft 9 is, at the time of unlatching, decoupled from the force-storing unit 13 and on attainment of the rest position of the force-storing unit 13 is coupled again so that the drive input shaft 9 does not execute a movement in opposite sense to the relaxing force-storing unit 13 .
  • the coupling between force-storing unit 13 and its drive input shaft 9 can also be maintained and merely the electric motor 3 switched to be free of current so that it can be co-rotated by the force-storing unit 13 with little expenditure of energy.
  • FIGS. 3, 4 and 5 show different perspective views of the on-load tap changer transmission 100 of the on-load tap changer 1 .
  • the force-storing unit 13 is illustrated only in FIG. 5 .
  • the drive input shaft 9 of the on-load tap changer transmission 100 is driven by an electric motor 3 via a motor housing 5 .
  • a drive input shaft gear 115 of the drive input shaft 9 drives a crank 113 of the rotation pick-up 110 by a rotation pick-up gear 116 of the rotation pick-up 110 .
  • the crank 113 stresses the force-storing unit 13 .
  • the crank 113 As soon as the crank 113 has fully loaded the force-storing unit 13 , it is automatically unlatched by the drive input shaft gear 115 of the drive input shaft 9 and driven by the force-storing unit 13 .
  • the unlatched crank 113 drives the rotation translator 110 .
  • the rotation translator 110 on the one hand drives a first cam disk 131 of a rotation pick-up 130 by a first follower 111 with a first follower wheel 112 and on the other hand drives a Geneva disk 120 by a Geneva driver 114 .
  • the Geneva disk 120 on the one hand drives a switching tube 15 of the on-load tap changer 1 and on the other hand a preselector driver 150 for driving a preselector 37 of the on-load tap changer 1 .
  • the preselector driver 150 drives a second cam disk 132 of the rotation pick-up 130 by a second follower 141 with a second follower wheel 142 .
  • a rotation pick-up gear 145 of the rotation pick-up 140 drives, directly or by an intermediate gear 146 , an indicator shaft gear 152 that is seated on an indicator shaft 151 to be axially and rigidly connected, so that a rotation of the indicator shaft 151 is produced.
  • the indicator shaft 150 is mechanically coupled with the detector 200 .
  • the rotation of the indicator shaft 151 is detected by the detector 200 and converted into and output as an electrical signal.
  • a movement detector 300 is at the drive input shaft 9 .
  • the movement detector is constructed as, for example, a transmitter system or cam-switching mechanism and detects the rotation of the drive input shaft 9 and thus, indirectly by the motor transmission 5 , the drive movement of the electric motor 3 .
  • FIG. 6 is a perspective view of the cover 19 of the on-load tap changer 1 and the connection thereof with a controller 400 .
  • the indicator shaft 151 is led through an opening (not illustrated) in the cover 19 so that the detector 200 can be on the cover 19 .
  • a detector housing 240 for receiving the detector 200 is formed on the cover 19 .
  • the detector housing 240 is closable and openable by a detector housing cover 241 (see FIG. 1 ), so that the detector 200 can be easily accessed and in a given case exchanged without the cover 19 having to be demounted. Equally, the movement detector 300 is received in an intermediate housing 14 .
  • the detector 200 , the movement detector 300 , the electric motor 3 directly or a motor control 430 of the electric motor 3 and/or a transmission control 450 of the motor drive 50 are connected with a controller 400 for controlling and/or regulating the on-load tap changer 1 .
  • the controller 400 can regulate, for example, the electric motor 430 on the basis of the signals of the detector 200 and movement detector 300 in a regulating circuit.
  • FIGS. 7 and 8 show a perspective view of one embodiment of the detector 200 for detecting the switch setting of the on-load tap changer 1 according to the invention.
  • the cam disk 211 is illustrated in section.
  • the detector 200 consists of an electronic circuit 230 with circuit contacts 231 .
  • the circuit 230 carries a cam-switching mechanism 210 .
  • This cam-switching mechanism 210 consists of at least one cam disk 211 with a plurality of switch-setting positions 201 , 202 , 203 and at least one lobe 212 .
  • the at least one lobe 212 is detachably connectable at each switch-setting position 201 , 202 , 203 .
  • a respective cam disk 211 is rotatably mounted on the upper side 232 and on the lower side (not able to be illustrated in this perspective view) of the circuit 230 and can be coupled with the indicator shaft 151 of the on-load tap changer transmission 100 .
  • This cam disk 211 executes, for example, a twentieth of a revolution per switching process of the switching tube 15 . The rotational sense of this revolution is determined by means of the on-load tap changer transmission 100 from the setting of the preselector 37 .
  • At least one switch 220 for detecting an end position 201 of the on-load tap changer 1 is in that way associated with the at least one cam disk 211 .
  • Each switch 220 is in that way actuatable by at least one lobe 212 .
  • the detector comprises a transmitter system 250 .
  • the transmitter system 250 comprises a plurality of wiper contacts 14 and a wiper 215 rigidly connected with the circuit. At least one wiper contact 214 that can be electrically coupled to the wiper 215 , is formed at each switch-setting position 201 , 202 , 203 of the at least one cam disk 210 .
  • one cam disk 211 according to the invention is sufficient in the detector 200 in order to detect the switch setting of the on-load tap changer 1 .
  • the detector 200 is redundantly provided with the second and possibly further cam disks 211 .
  • a wiper 215 can be associated with two adjacent cam disks 211 .
  • the electronic circuit 230 can, for example, further process the switch-setting positions 201 , 202 , 203 that are detected by the detector 200 , into an electronic signal, for example, amplify and/or digitalize them.

Landscapes

  • Housings And Mounting Of Transformers (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Transmission Devices (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Protection Of Transformers (AREA)
  • Control Of Electrical Variables (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
US14/899,575 2013-07-16 2014-06-24 On-load tap changer Active US9697963B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013107558 2013-07-16
DE102013107558.4 2013-07-16
DE102013107558.4A DE102013107558A1 (de) 2013-07-16 2013-07-16 Laststufenschalter
PCT/EP2014/063262 WO2015007477A1 (fr) 2013-07-16 2014-06-24 Changeur de prises en charge

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US20160155580A1 US20160155580A1 (en) 2016-06-02
US9697963B2 true US9697963B2 (en) 2017-07-04

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US (1) US9697963B2 (fr)
EP (1) EP3022749B1 (fr)
JP (1) JP6501769B2 (fr)
CN (1) CN105493216B (fr)
DE (1) DE102013107558A1 (fr)
UA (1) UA119146C2 (fr)
WO (1) WO2015007477A1 (fr)

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US20230230786A1 (en) * 2020-10-26 2023-07-20 Hitachi Energy Switzerland Ag System for controlling a vacuum interrupter for a power diverter switch, a power diverter switch and an on-load tap changer

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RU2713393C2 (ru) * 2015-08-28 2020-02-05 Машиненфабрик Райнхаузен Гмбх Переключатель под нагрузкой для ступенчатого переключателя под нагрузкой и постоянный главный выключатель и разъединитель для него
DE102018130869A1 (de) 2018-12-04 2020-06-04 Maschinenfabrik Reinhausen Gmbh Lastumschalter für Laststufenschalter und Laststufenschalter
CN110081226B (zh) * 2019-03-14 2020-02-14 哈尔滨工程大学 一种水下控制模块集成液压基盘
CN109931962B (zh) * 2019-04-02 2024-01-26 河北旭辉电气股份有限公司 磁感应式非接触型有载开关档位回读装置
JP7095185B2 (ja) * 2019-11-26 2022-07-04 株式会社東芝 負荷時タップ切換器
CN112201532B (zh) * 2020-08-26 2023-01-24 广东电网有限责任公司佛山供电局 一种有载分接开关控制装置
CN112201531B (zh) * 2020-08-26 2024-01-23 广东中鹏电气有限公司 一种有载调压开关
CN114878977A (zh) * 2022-03-31 2022-08-09 上海交通大学 一种有载分接开关的绝缘校核方法

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JP6501769B2 (ja) 2019-04-17
DE102013107558A1 (de) 2015-01-22
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CN105493216A (zh) 2016-04-13
US20160155580A1 (en) 2016-06-02
UA119146C2 (uk) 2019-05-10
EP3022749B1 (fr) 2020-02-26
JP2016524349A (ja) 2016-08-12
EP3022749A1 (fr) 2016-05-25

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